Balcony Solar Panels and Planning Permission in Flats (UK 2026)

What the 2026 Order Did for Flats

Until 27 August 2026 nobody could give a flat owner a clean answer. Class A of Part 14 of Schedule 2 to the Town and Country Planning (General Permitted Development) (England) Order 2015 (the GPDO) covers solar on domestic buildings, and there was a live argument about whether it applied to flats at all. The independent safety study commissioned by DESNZ called the position of plug-in PV under permitted development “currently unclear”. This page used to set out that argument and leave it open.

SI 2026 No. 896 changed three things that matter for a flat.

• It defines the product. “Plug-in solar” now means solar photovoltaics “intended for connection to the relevant domestic premises’ electricity installation by means of a standard plug and socket”, and the definition of “solar PV” is amended to read “including plug-in solar”. A plug-in kit is expressly inside permitted development.
• It regulates blocks of flats expressly. Class A now has a list of conditions for blocks of flats alongside a separate list for houses. A rule that says when development on a block of flats is not permitted presupposes that it can be, so the argument that flats fall outside Class A has moved on.
• It bars timber. Plug-in solar isn’t permitted development where any part of it would be installed on a wooden wall, balcony or enclosure, or on any part of the exterior of a block of flats which is clad in timber.

What it didn’t do is give flats the new balcony allowances. The list for houses lets a panel protrude up to 0.4 metres beyond a wall or a balcony or roof enclosure, or 0.2 metres where the wall or enclosure abuts a highway, and defines “roof enclosure” to include “any balustrade, railing, parapet or other enclosure installed on the roof of a building”. None of that is in the list for blocks of flats. On our reading, a block keeps the conditions that applied before, including the 0.2 metre protrusion limit, with two additions: no solar on a listed block, and no plug-in solar on any wooden or timber-clad part of the exterior. The pre-2026 doubts about how a 0.2 metre limit fits a railing mount still have force for flats.

The Order also has a transitional saving. Where development was permitted immediately before 27 August 2026 but the amendments remove that permission, it may still be carried out until the end of 26 August 2027. That protects what the old rules allowed, and it’s no help on timber, because the product specification bars timber mounting separately. The full limits, and the reasoning behind our reading, are on our planning permission page.

Do You Need Planning Permission for Balcony Solar on a Flat?

In England, work through it in this order.

1. Is the building listed? If so, there’s no permitted development for solar on it, and Listed Building Consent is a further, separate regime.
2. Is any part of the mounting surface wooden or timber-clad? If so, plug-in solar isn’t permitted development, and the product specification bars it anyway.
3. Does the panel stay within the conditions for a block? The 0.2 metre protrusion limit is the one that matters, and how it applies to a railing mount is the unsettled part, because it was written with roof-mounted panels in mind.
4. Ask your local planning authority in writing. Describe the panel, the mount, where it goes and how far it sticks out.

The two lists side by side. The house figures are the ones in SI 2026 No. 896; the block column is our reading of the Order, as set out on our planning permission page.

If you’re thinking of the roof of the block rather than your balcony, the roof is usually a common part as well. Our flat roof solar guide covers measuring, ballast mounts and who owns the roof.

Listed Buildings and Conservation Areas

If your block is listed, the 2026 Order gives it no permitted development for solar, so any installation needs a planning application, and Listed Building Consent is a further, separate regime. The product specification puts this on you: manufacturers must tell users that “Users are responsible for obtaining any necessary planning permission and Listed Building Consents”.

For a house in a conservation area or World Heritage Site, the Order bars anything on a wall, balcony or roof enclosure which fronts a highway; a rear or courtyard-facing balcony can still qualify. That test sits in the list for houses. For a block of flats in a conservation area, ask the council before fitting anything.

Scotland, Wales, and Northern Ireland

The 2026 Order amends the England permitted development regime; the Explanatory Memorandum puts its practical effect as England only. Planning is devolved, so outside England the older uncertainty about balcony mounting carries on in each jurisdiction’s own terms.

• Scotland. Scottish permitted development has its own order and hasn’t adopted the 2026 balcony provisions. Roof solar on houses is long-established permitted development; for balcony or wall mounting, ask your council.
• Wales. Wales runs its own permitted development framework and the 2026 amendments don’t have practical effect there. Roof solar is covered on similar terms to England; balcony mounting isn’t expressly addressed.
• Northern Ireland. Northern Ireland planning is governed by the Planning Act (Northern Ireland) 2011. The ESQCR limb of SI 2026 No. 848 doesn’t extend to Northern Ireland, so the position on lawful use there is unresolved.

Outside England, ask your council before mounting anything on a balcony or wall.

Planning and the Lease Are Separate Questions

Planning permission is a public law matter, decided by your local planning authority. Lease consent is a private law matter between you and your freeholder, set by the terms of your lease. Clearing one says nothing about the other: an installation that needs no planning permission may still need your freeholder’s consent, and a freeholder’s consent doesn’t grant planning permission.

Permitted development also gives you no rights over parts of the building that aren’t yours. It answers the planning question only. Whether you can fix anything to a railing, wall or roof is for your lease.

Check Your Lease Before You Do Anything

Read your lease before you look at products or measure up the balcony. Look for:

• Alterations and improvements clauses. These typically say something like “the tenant shall not make any structural alteration to the demised premises without the written consent of the landlord”. The question is whether clamping a panel to a railing counts as an alteration within the clause.
• External appearance clauses. Many leases prohibit any change to the external appearance of the property. A balcony-mounted panel visibly changes it, so a clause like this is likely to need the freeholder’s consent.
• The demise and the common parts. In some developments the balcony is demised to the flat; in others it’s a common part you’re allowed to use. Often the balcony floor is demised while the structure, the external wall face and the railing are retained, and a railing clamp fixes to exactly those parts. Check the demise definition and what it excludes, the plan annexed to the lease, and the title plan at HM Land Registry.
• Nuisance and annoyance clauses. Some leases contain broad clauses against anything that causes nuisance or annoyance to other residents. A panel that overshadows a neighbour’s balcony could be caught.

Where the wording is ambiguous, and many leases are, short advice from a leasehold solicitor is worth more than any general guide, this one included. Ask for a fixed fee up front. Our page on plug-in solar in blocks of flats goes through the demise question in more detail.

Asking for Consent

Leases handle alterations three ways. An absolute covenant prohibits the work outright. A qualified covenant prohibits it without consent. A fully qualified covenant adds that consent isn’t to be unreasonably withheld. Where a lease contains a covenant against making improvements without consent, section 19(2) of the Landlord and Tenant Act 1927 deems it subject to that proviso anyway, but it does nothing to an absolute covenant, and the landlord can still ask for a reasonable sum for legal or other expenses properly incurred. Whether a plug-in kit is an “improvement” under section 19(2) turns on case law we haven’t read.

Write to whoever holds the approval function, and find out who that is first. In many blocks it’s a residents’ management company; where leaseholders have exercised the right to manage, section 98 of the Commonhold and Leasehold Reform Act 2002 makes approval functions “instead functions of the RTM company”. The managing agent is usually who you correspond with, and usually not who decides. Our guide for managing agents and RMCs sets out the process from their side.

Be specific in the request: the kit and its ENA Type Test Register listing, the panel size and weight, exactly which part of the building the mounting touches (railing, wall, balcony floor, or nothing with a free-standing frame), that it plugs into an existing socket with no new wiring, and that you’ll notify your distribution network operator. A precise question tends to get a precise answer. For a letter you can adapt, see our guide to asking your landlord about balcony solar.

If the Answer Is No

A Variation of Lease

If the freeholder is willing in principle but wants formal security, a deed of variation adding a specific permitted use is possible. It means legal work and cost, so in blocks where several leaseholders want panels, a collective approach may be worth pursuing.

A Portable Off-Grid System

A folding panel charging a portable power station fixes nothing to the building, so the alterations covenant doesn’t come into it in the same way. Your lease may still have rules about what you keep on a balcony, and Home Office guidance tells residents to keep balconies clutter free and not to use them for storage. The trade-offs are lower output and the cost of the power station.

If Your Block Is a Higher-Risk Building

Under section 65(1) of the Building Safety Act 2022, a higher-risk building is one in England at least 18 metres tall or with at least 7 storeys, containing at least 2 residential units. Section 62(1) defines a building safety risk as risk to people from the spread of fire or structural failure, and a panel fixed to an external wall touches both. Sections 83 to 85 require the accountable person to assess those risks and keep a safety case report, and section 95(2) requires residents not to create a significant risk of one materialising or to interfere with a relevant safety item. Section 92 requires the accountable person to give residents prescribed information on request, which is one way to find out what the walls are made of.

That regime is separate from clause 5.8, which carries no height threshold at all. A low-rise block with timber balconies is caught by clause 5.8; a tall concrete block with none of the listed materials isn’t, though the Building Safety Act still applies to it. Our fire safety and higher-risk buildings guide covers both.

Renters and Housing Association Tenants

If you rent, the planning position is the same as for any other flat. You need your landlord’s permission, and if you rent a leasehold flat your landlord may in turn need the freeholder’s. Housing association and council tenants ask the housing association or council as landlord; ask for its policy on tenant alterations in writing. The Renters’ Rights Act 2025 governs the landlord-and-tenant leg, not the leaseholder-and-freeholder leg.

See our housing association and council tenants solar guide, the renters’ hub and the Renters’ Rights Act 2025 and balcony solar.

Frequently Asked Questions